This is the first Cubs home game of the season, you can see that the ivy on the back wall of Wrigley Field is green. The ivy is never green like that during the first two months, at least, of the season.
When Kevin gets home from the airport, he says Ashley was talking on the phone with Jared when he left, but we in fact see that she wasn't.
We see Kevin leaving for the airport just a couple of minutes after Paul and Carrie, but when he gets there Carrie has already checked in and gone through customs and security, which should take more than an hour.
Kevin says that Jared is not going to New York in a month, before he goes to dinner with Carrie. The next day after he says that, Ashley is on the phone with Jared, who is already in New York.
The handbag Ashley orders is the same one as the twins come out the shop with, when they are shopping in Paris in Passport to Paris.
When Kevin opens the package containing the handbag that Ashley ordered, the flaps come undone immediately, and it apparently isn't taped up at all. Boxes that are mailed to people are normally packaged much better than that.
This episode has the same title as The Suite Life of Zack and Cody episode where Zac Efron guest stars.
Just after the part Jared burps and they turn to Ashley, you can see a silver/white clip in her hair, and then when they turn to her again, it's gone.
Goof: At the very end of the episode, the words '7th Grade' are printed atop the yearbook, and there is a photograph of the twins teacher who is clearly male. However, in the pilot, the twins are starting their first day of seventh grade and Mary-Kate states; 'I can't believe MISS Tandy gave us homework on the first day'.
When the girls wake up to find the ink on Ashley's face, Mary-Kate is wearing black socks, but a few moments later, when they're in the kitchen, her socks are white.
When Matt takes the girls to the hockey match, Kevin, Carrie, and Nancy are at the house worried. Then Kevin sees Mary-Kate hurt on TV and goes with Carrie to the match, but neither of them bothers to tell Nancy, who is in the kitchen with no idea of what's going on.
Where did Eddie go anyway? It seems like at this point he vanished into 'lost character land' with Judy Winslow.
Kevin complains that the plumber is very expensive, so he tries to fix the pipes himself. However, it never occured to him to ask his best friend, Eddie, who happens to be a plumber, for help.
The day that Ashley has her Valentine's date with Eric is the same day that Kevin takes Carrie to Vitello's to make up with Leslie. Isn't it a little strange that Kevin is able to get a table at, what looks like, a very nice restaurant on Valentine's Day at only a moments notice?
Paul stays with Mary-Kate and Ashley to watch them and to make some work on the computer for Kevin. The twins make a party, but Paul doesn't do Kevin's work. In fact, the computer isn't even there anymore.
Mary-Kate says that she can't sleep in the attic because it's too scary. Why didn't she move to the guest room where Uncle Matt stays in episodes 18-22?
Emile Hirsch, who guest stars as Jeremey, is now starring as Jay Adams in the movie, Lords of Dogtown.
In this episode, Carrie knows nothing about computers and she is wondering how to turn it on. However, in "You've Got a Friend," she is using a computer to write an English paper, and she doesn't need any help using it.
When Kevin is showing Carrie what to do on the computer, he says to Eddie "two minutes," but holds up four fingers.
Jeremy lied about not knowing how to swing dance. But at the end of the episode, he is seen swing dancing with Mary-Kate. If it took Mary-Kate three days to learn how to dance, how did Jeremy pick up on it so fast?